Castle Biosciences, Inc. (CSTL)

NASDAQ: CSTL · USD

$36.7

+2.14 (+6.2%)· Recorded snapshot

Market cap	1.1B
Revenue (ttm)	357.3M
Net income (ttm)	-19.4M
EPS (ttm)	-$0.65
Shares out	30.5M
Volume	362,952
Beta	0.95

Market data

Price

Recent price action with selectable time range.

Financial snapshot

Revenue (ttm): 357.3M
Net income (ttm): -19.4M
EPS (ttm): -$0.65
Market cap: 1.1B

Ticker	Name	Market cap	P/E	P/S	ROIC	5Y rev CAGR	1Y total return	Rating
EXAS	Exact Sciences Corp	—	—	—	—	—	—	Tut

Calendar

Next earnings

Upcoming earnings date and setup when available.

Upcoming

DateLoading

Window—

EPS estimate—

Revenue estimate—

Sector percentile context

Refreshed 2026-10-28 19:55 UTC

Forward P/En/a

P25 13.4P50 20.2P75 35.7

Trailing P/En/a

P25 15.4P50 25.8P75 43.5

ROE-4.2

P25 -113.8P50 -46.5P75 -0.9

ROIC-5

P25 -68.5P50 -27.1P75 1.8

Benchmarks · 1M

All CSTL indicators

Market & fundamental data

Available fields

216

Groups with data

Currency

USD

Showing 216 of 216 available metrics for this ticker.

Profile and market data

Ticker identity, listing, currency, market cap, and source dates.

Metric	Value
Amount currency	USD
CIK code	0001447362
Company name	Castle Biosciences, Inc.
Country	United States
Country code	US
CUSIP number	14843C105
Earnings date	2026-11-05
Earnings time	amc
Employees	1,002
Employees change	204
Employees growth	25.56%
Enterprise value	$889.5M
Exchange	NASDAQ
Financial currency	USD
Financial report date	2026-06-30
First seen	2026-05-09
Fiscal year end	December
Founded	2007
In index	RUSSELL2000
Industry	Diagnostics & Research
IPO date	2019-07-25
Is primary listing	Yes
Is SPAC	No
ISIN number	US14843C1053
Last 10-K release date	2026-02-26
Last earnings date	2026-07-30
Last refreshed	2026-10-28
Last stock split type	Never
Market cap	$1.1B
Market cap category	Small-Cap
Next earnings date	2026-11-05
Options	Yes
Price	$36.65
Price currency	USD
Sector	Healthcare
SIC code	8071
Stock price date	2026-10-28
Symbol	CSTL
U.S. state	Texas
Website	https://castlebiosciences.com

Valuation

Multiples, yields, enterprise-value ratios, and valuation checks.

Metric	Value
Earnings yield	-1.78%
EV/Sales	2.48x
FCF / EV yield	-0.06%
FCF yield	-0.04%
Forward EV/Sales	2.29x
Forward P/S	2.88x
Industry forward P/E	30.87x
Industry P/E	50.24x
P/B ratio	2.24x
P/OCF ratio	26.14x
P/S ratio	3.12x
Price / tangible book value	2.97x
Sector forward P/E	23.56x
Sector P/E	50.08x

Profitability

Margins, returns on capital, cash conversion, and quality metrics.

Metric	Value
EBIT margin	-3.36%
EBITDA margin	-4.62%
Gross margin	77.26%
Operating margin	-3.36%
Pretax margin	-5.37%
Profit margin	-5.43%
Profit per employee	$-19,376
Revenue per employee	$356,565
ROA	-1.36%
ROA (5Y)	-5.79%
ROCE	-2.38%
ROE	-4.2%
ROE (5Y)	-7.91%
ROIC	-5.04%
ROIC (5Y)	-33.79%
SBC / revenue	12.56%
Tax / revenue	0.06%

Growth

Revenue, earnings, cash-flow, and forward growth indicators.

Metric	Value
EPS growth years	0
FCF growth (Q)	-43.32%
Gross profit growth	-1.58%
Gross profit growth (Q)	16.46%
Gross profit growth 3Y	29.23%
Gross profit growth 5Y	33.05%
Net income growth years	0
OCF growth	-31.77%
OCF growth (Q)	-26.99%
Revenue growth	3.18%
Revenue growth (Q)	20.14%
Revenue growth (QoQ)	23.74%
Revenue growth 3Y	28.72%
Revenue growth 5Y	35.55%
Revenue growth quarters	1
Revenue growth years	8

Financial statements

Income-statement and cash-flow amounts, totals and per share.

Metric	Value
Capital expenditures	$-43.1M
Depreciation and amortization	$-4.5M
EBIT	$-12M
EBITDA	$-16.5M
EPS	$-0.65
FCF per share	$-0.02
Financing cash flow	$-11.4M
Free cash flow	$-489,000
Free cash flow minus SBC	$-45.4M
Gross profit	$276M
Income taxes	$212,000
Investing cash flow	$-51.3M
Net borrowing	$-106,000
Net cash flow	$-20.1M
Net income	$-19.4M
Operating cash flow minus SBC	$-2.2M
Operating income	$-12M
Revenue	$357.3M
Stock-based compensation	$44.9M

Financial strength

Debt, cash, solvency, accounting-quality, and balance-sheet signals.

Metric	Value
Altman Z-Score	5.77
Book value per share	$15.41
Debt / equity	0.08
Goodwill	$10.7M
Interest coverage	-32.02
Long-term assets	$220.1M
Long-term liabilities	$34.6M
Net cash (debt)	$230.2M
Net cash / market cap	20.65%
Net cash growth	-3.53%
Net debt / equity	-0.49
Piotroski F-Score	3
Property, plant and equipment	$118.9M
Shareholders' equity	$470M
Tangible book value	$374.9M
Tangible book value per share	$12.29
Total assets	$561.2M
Total cash	$266.8M
Total debt	$36.7M
Total liabilities	$91.1M
WACC	9.17%

Liquidity

Current-asset coverage and working-capital efficiency metrics.

Metric	Value
Asset turnover	0.65
Current assets	$341.1M
Current liabilities	$56.5M
Current ratio	6.04
Inventory turnover	8.58
Net working capital	$22.1M
Quick ratio	5.6
Working capital	$284.6M
Working capital turnover	1.23

Dividends and buybacks

Dividend yield, payout, buybacks, and shareholder-yield indicators.

Metric	Value
Buyback yield / dilution	-4.6%
Dividend yield	0%
Shareholder yield	-4.6%

Performance and technicals

Returns, volatility, beta, momentum, RSI, and moving-average context.

Metric	Value
150-day SMA	$27.24
1D price change	6.2%
1M price change	2.16%
1M total return	2.16%
1W price change	10.36%
1W total return	10.36%
1Y price change	52.69%
1Y return CAGR	52.74%
1Y total return	52.69%
20-day SMA	$33.84
200-day SMA	$28.55
3M price change	49.69%
3M total return	49.69%
3Y price change	180.13%
3Y return CAGR	40.96%
3Y total return	180.13%
50-day SMA	$34.01
50-day SMA vs 200-day SMA	50over200
52-week high	$44.28
52-week high date	2026-01-26
52-week low	$17.72
52-week low date	2026-05-14
5Y price change	-39.77%
5Y return CAGR	-9.64%
5Y total return	-39.77%
6M price change	46.46%
6M total return	46.46%
All-time high	$107.69
All-time high date	2021-02-10
All-time low	$9.26
All-time low date	2023-06-05
Average true range (ATR)	$1.62
Average volume	318.4K
Beta (1Y)	-0.16
Beta (2Y)	0.54
Beta (5Y)	0.95
Change from 52-week high	-17.23%
Change from 52-week low	106.81%
Change from all-time high	-66.03%
Change from all-time low	295.09%
Change from open	1.22%
Day's gap	4.93%
Dollar volume	$13.3M
High price	$37.20
Low price	$36.21
Monthly RSI	58.88
Open price	$36.21
Position in 52-week range	44.44%
Previous close	$34.51
Price vs 150-day SMA	34.32%
Price vs 20-day SMA	8.11%
Price vs 200-day SMA	28.14%
Price vs 50-day SMA	7.58%
Relative volume	1.14
Return from IPO open	82.43%
Return from IPO price	128.03%
RSI	62.05
Sharpe ratio	0.96
Sharpe ratio (3Y)	0.82
Sharpe ratio (5Y)	0.17
Sortino ratio	1.51
Sortino ratio (3Y)	1.33
Sortino ratio (5Y)	0.33
Volume	363K
Weekly RSI	63.22
YTD price change	-5.95%
YTD total return	-5.95%

Ownership and float

Institutional, insider, float, short-interest, and share-count fields.

Metric	Value
Float	27.2M
Float percentage	88.96%
Shares change (QoQ)	1.71%
Shares change (YoY)	4.6%
Shares held by insiders	1.95%
Shares held by institutions	81.44%
Shares outstanding	30.5M
Short % of float	7.42%
Short % of shares	6.6%
Short ratio	5.8 days

Deeper analysis on CSTL

14 sections in the full report · jump straight to what you need

Forecast

Base and Bull forecast paths with report-date return framing.

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Valuation

Fair-value bridge, DCF, owner earnings, and peer multiples.

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Sensitivity

Cost-of-equity and terminal-growth stress table.

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Risks

Kill scenarios, soft-pass flags, and downside catalysts.

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Earnings

Next earnings setup and beat / inline / miss thresholds.

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Position sizing

Entry, exit, conviction, and quarterly monitoring rules.

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Financials

Revenue, margins, cash flow, and balance-sheet context.

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Peers

Relative valuation and profitability against the cohort.

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Moat

Economic-profit evidence and competitive advantage risk.

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Industry cycle

Sector phase, capital cycle, and secular tailwinds.

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Frequently asked questions

About this CSTL report

Is a complete CSTL research report available?

No complete published report is available for Castle Biosciences, Inc. (CSTL) on this page. Market-directory data, when present, is not a substitute for a validated stock analysis.

Castle Biosciences, Inc. (CSTL)

Price

Financial snapshot

Fair-value bridge

Latest news · CSTL

Valuation

Profitability

Balance sheet

Trading

Next earnings

Sector percentile context

All CSTL indicators

Profile and market data

Valuation

Profitability

Growth

Financial statements

Financial strength

Liquidity

Dividends and buybacks

Performance and technicals

Ownership and float

Deeper analysis on CSTL

Frequently asked questions